Construction World December 2021

As a company that specialiasing in water-retaining structures, Quantibuild is tremendously proud to have successfully pioneered the first prestressed round reservoir raft floor in Africa along with our partners Res Spec and Morad Consulting and progressive Employer, Merafong City Local Municipality. In terms of both technicality, economy and long-term sustainability, the application of prestressed raft floors in round reservoirs should become standard practice for the dolomitic regions throughout South Africa. The solution has provided substantial saving to the Employer and will one day soon provide substantial improvement to the quality of life of the Khutsong community. 

reinforced raft slab, further ensured a single-pour jointness slab construction and zero cracking under normal load conditions (not sinkhole state). Noted savings were achieved through optimal utilisation of both prestressed and non-prestressed reinforcement in a partial-prestress crack-width design with consideration of optimal location of tendons in the section thickness. Further savings were achieved through optimal tendon arrangement, viewed in plan. The innovative arrangement enables all PT anchorages to be aligned perpendicular to the circular edge and distributes compressive stresses economically and uniformly in both circumferential and radial directions.

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20 th Best Project Awards 2021